It completely depends on what kind of events you like to conduct in the future. When it comes to the NIEM Pune, the focus is more on corporate events and this, in turn, would give you more corporate and/or wedding planning experiences in practicality.
Whereas, as far as NIEM Mumbai is concerned, it focuses much more on the show business and exhibition aspects of event management. In the end, it entirely depends on what sort of events interest you more.
A friend of mine has worked with both the Pune and Mumbai branches so my knowledge comes from experience.
I have a few friends at NIEM Mumbai. Based on what I heard through then I can give you a brief idea about the institute. If you are passionate about event management, then you can definitely consider joining NIEM in Mumbai. The center offers three courses, which are as follows.
You should check out the fee structure, training, placement facilities, and the value of the degree but most importantly the feedback of the current as well as previous students before taking a call.